PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4820Sensor,humidity

Newport Scientific Inc Hygrodynamic Products Div · NSN 6685-01-461-4577 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-461-4577 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-461-4577. Primary manufacturer part number: 4820.
Features
  • Sensor,humidity — FSC 6685
  • Color: BLUE
  • 1 verified cross-reference
  • Primary manufacturer: Newport Scientific Inc Hygrodynamic Products Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Sensor,humidity, cataloged under National Stock Number 6685-01-461-4577, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Newport Scientific Inc Hygrodynamic Products Div. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-461-4577
Primary Part Number4820
Item NameSensor,humidity
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerNewport Scientific Inc Hygrodynamic Products Div
StatusACTIVE
ColorBLUE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
7530-00-285-2917CRD1524E-B INTERCHANGEABLE
Jacket,filing,wallet
Apex Office Products Inc
2640-00-338-2705048200507 INTERCHANGEABLE
Valve Extension,tire
Schrader-Bridgeport International Inc Dba Schrader Automotive
2920-00-342-77964820 INTERCHANGEABLE
Cable Assy
Champion Aerospace Llc
4730-00-389-8243475896 INTERCHANGEABLE
Connector,multiple,fluid Pressur
General Motors Llc Dba General Motors Llc
5965-00-475-2759815-1853010PC62REVA INTERCHANGEABLE
Mouthpiece,microphone
Naval Ship Systems Command
5950-00-548-8001S6202-3102205 INTERCHANGEABLE
Transformer,power
Naval Ship Systems Command
3040-00-602-7083 INTERCHANGEABLE
Pawl
2040-00-896-6537 INTERCHANGEABLE
Gear Assembly,bevel
8340-01-212-9470 INTERCHANGEABLE
Tent
6515-01-296-25304820 INTERCHANGEABLE
Tubing,surgical
Davol Inc
Cross-Reference Index
Part NumberManufacturer
4820 PRIMARY Newport Scientific Inc Hygrodynamic Products Div (USA)
Related Parts
7530-00-285-2917INTERCHANGEABLE
JACKET,FILING,WALLET
CRD1524E-B
2640-00-338-2705INTERCHANGEABLE
VALVE EXTENSION,TIRE
048200507
2920-00-342-7796INTERCHANGEABLE
CABLE ASSY
4820
4730-00-389-8243INTERCHANGEABLE
CONNECTOR,MULTIPLE,FLUID PRESSUR
475896
5965-00-475-2759INTERCHANGEABLE
MOUTHPIECE,MICROPHONE
815-1853010PC62REVA
5950-00-548-8001INTERCHANGEABLE
TRANSFORMER,POWER
S6202-3102205
3040-00-602-7083INTERCHANGEABLE
PAWL
2040-00-896-6537INTERCHANGEABLE
GEAR ASSEMBLY,BEVEL
8340-01-212-9470INTERCHANGEABLE
TENT
6515-01-296-2530INTERCHANGEABLE
TUBING,SURGICAL
4820
4820-01-355-4004INTERCHANGEABLE
DISK,VALVE
5331-01-498-5217INTERCHANGEABLE
O-RING
4820

Frequently Asked Questions

What is NSN 6685-01-461-4577?

NSN 6685-01-461-4577 is a Sensor,humidity, manufactured by Newport Scientific Inc Hygrodynamic Products Div, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-461-4577?

NSN 6685-01-461-4577 has 1 cross-referenced part number: 4820 (Newport Scientific Inc Hygrodynamic Products Div).

What NSN replaces 6685-01-461-4577?

There are 12 known substitutes for 6685-01-461-4577: 7530-00-285-2917, 2640-00-338-2705, 2920-00-342-7796 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820?

Key specifications for 4820: Special Features: RH RANGE @ 80 DEG F 51 TO 74%;ACCURACY +/- 1% RH;QUICK RESPONSE;3 SECONDS FOR 65% CHANGE; HYGROSENSOR IS TRANDSDUCER CONSISTING OF A BIFILAR WINDING OF PALLADIUM WIRE ON A POLYSTYRENE CORE COATED WITH A HYGROSCOPIC FILM DEGF; Color: BLUE. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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